Saturday, June 10

Audi SQ7 TDI with electric turbo unveiled at Geneva Show

Audi, at the 2016 Geneva Motor Show, unveiled the SQ7 TDI. The concept features  an electrically powered compressor (EPC) to spin the turbo which replaces the conventional exhaust-driven compressor and eliminates the associated lag in the process.

Audi has paced two conventional, sequential turbochargers and a third compressor that is powered electrically. 

Audi SQ7 TDI  (14)

The SQ7 TDI is powered by a 4.0-liter V8 diesel that puts out 435 horsepower and an astonishing 664 lb-ft of torque. The 4.0L (3956cc) 90-degree DOHC diesel V-8 is all-new from the ground up.

Audi SQ7 TDI  (6)

The most notable feature is an electric compressor that complements the two exhaust-driven sequential turbochargers. The electric turbo kicks in from a standstill – it doesn’t require the exhaust gas spin-up of traditional turbos – and compresses air entering the SQ7’s intake; all of this translates into more power at lower engine speeds.

Audi SQ7 TDI  (9)

The electrically powered compressor dispenses with any sign of turbo lag from step-off acceleration, helping to set 0-100km/h in 4.8 seconds.
Audi SQ7 TDI  (13)

The new roll stabilization system relies on a compact electric motor with a three-stage planetary gearbox that separates the two halves of the stabilizer bars. It’s enabled by a new 48-volt electrical architecture in the Q7.

Audi SQ7 TDI  (7)

The compressor is driven by a 48V lithium ion battery that also powers three modules: sport differential, electromechanical active roll stabilisation and all-wheel steering.

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